code: def test_malformed_headers(self, mock_verify_token, auth_header):
      mock_verify_token.return_value = {
          "iss": "accounts.google.com",
          "email_verified": True,
          "email": "test@fab.org",
      }
  
      with self.app.test_client() as test_client:
          response = test_client.get(
              "/api/experimental/pools",
              headers={"Authorization": auth_header},
          )
  
      assert 403 == response.status_code
      assert "Forbidden" == response.data.decode()
  
file_path: airflow/tests/providers/google/common/auth_backend/test_google_openid.py
imports: from __future__ import annotations
  from unittest import mock
  import pytest
  from flask_login import current_user
  from google.auth.exceptions import GoogleAuthError
  from airflow.www.app import create_app
  from tests.test_utils.config import conf_vars
  from tests.test_utils.db import clear_db_pools
label_desc: Use image node_id 3 for calling the TestGoogleOpenID obj's underlying member method code with example usage: obj.test_malformed_headers(mock_verify_token, auth_header) without return types